Carbide coated composite modified silicon aluminum oxynitride cu

Details Carbide coated composite modified silicon aluminum oxynitride cu Carbide coated composite modified silicon aluminum oxynitride cu

1982-05-20

1984-01-17

Czaja, Donald E.

Abrasive tool making process, material, or composition

Impregnating or coating an abrasive tool

51308, 51309, 427215, 428404, 501 98, B24D 1100

Patent

active

044262094

ABSTRACT:
Coated abrasion resistant composite ceramic cutting tools comprise a composite substrate body consisting essentially of a particulate material selected from the group consisting of the refractory metal carbides, nitrides, carbonitrides and combinations thereof uniformly distributed in a matrix, coated with at least one adherent coating layer comprising a refractory metal carbide. The particulate material is of an average particle size ranging between about 0.5 microns to about 20 microns and comprises from about 5 to about 60 volume percent of the composite cutting tool. The matrix consists essentially of a modified silicon aluminum oxynitride having about 2 to about 25 volume percent of a modifier selected from the oxides of silicon, yttrium, magnesium, hafnium, zirconium, beryllium, the lanthanides and combinations thereof.

REFERENCES:
patent: 3868235 (1975-02-01), Held
patent: 4169913 (1979-10-01), Kobayashi et al.
patent: 4252768 (1981-02-01), Perkins et al.

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